Stop using WebCore namespace in generated code

Source/build/scripts/templates/StylePropertyShorthand.h.tmpl

Index: Source/build/scripts/templates/StylePropertyShorthand.h.tmpl
diff --git a/Source/build/scripts/templates/StylePropertyShorthand.h.tmpl b/Source/build/scripts/templates/StylePropertyShorthand.h.tmpl
index 5f058e2d6f195559c8267a1d44881a92c410ae5c..8760c4373f7635aa3f63e7c3f51e8695111586f4 100644
--- a/Source/build/scripts/templates/StylePropertyShorthand.h.tmpl
+++ b/Source/build/scripts/templates/StylePropertyShorthand.h.tmpl
@@ -25,7 +25,7 @@
 #include "CSSPropertyNames.h"
 #include "wtf/Vector.h"
 
-namespace WebCore {
+namespace blink {
 
 class StylePropertyShorthand {
     WTF_MAKE_FAST_ALLOCATED;
@@ -87,6 +87,6 @@ bool isExpandedShorthand(CSSPropertyID);
 
 bool isExpandedShorthandForAll(CSSPropertyID);
 
-} // namespace WebCore
+} // namespace blink
 
 #endif // StylePropertyShorthand_h